document.write( "Question 1016850: Average for 15 students is 80, one more student joins in average turns to 81 what was his grade? \n" ); document.write( "
Algebra.Com's Answer #633262 by Cromlix(4381)\"\" \"About 
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Hi there,
\n" ); document.write( "Average for 15 students is 80
\n" ); document.write( "Therefore total marks were 15 x 80 = 1200
\n" ); document.write( "One more student joins making the average
\n" ); document.write( "81.
\n" ); document.write( "Therefore total marks became 16 x 81 = 1296
\n" ); document.write( "So, new student's grade was 1296 - 1200 = 96
\n" ); document.write( "Hope this helps :-)
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